Hydraulic window lift



Oct. 4, 1938. SOLDAT 2,132,325

HYDRAULIC WINDOW' LIFT Filed Sept. 20, 1937 2 Shee'cs-Sheet l INVENTOR ATTORNEYS "L piede 50ML-zzz' Oc't. 4, 1938.

l.. SOLDAT-rl 2,132,325

HYDRAULIC WINDOW LIFT Filed Sept. 20, 1937 2 Sheets-Sheet 2 Milf l mi 502,2@ m

INVENTOR ATTORNEYS PatentedvOct. 4, 1938 l Y* UNITED sTATEs PATENT OFFICE 2,132,325 HYDRAULIC WINDOW HFT Leute Soldatti, Benld, lill. Application September 20, 1937, Serial No. 164,787 i claim. (ci. 26a-ias) This invention relates to window lifts whereby mounted a tapered valve element l2 provided windows may be made to open or close at the with a substantially Y-shaped passage i3 there-v will of a person and with minimum eort on the through. The valve element is equipped With d part of said person, the primary object of the handle it for the rotation of the valve element character which includes a hydraulic operating provided with' recesses iii and it, The pipes t means electrically driven and manually actuand d have communication with the interior of ated for the starting of the device to either close the valve housing and also connected to the latter or open the window and which will automatically are pipes i5, H and 8- it) stop operation as the window reaches the' limit A ud pump iS indicated generally by the im of its movement to open or closed positions and Character i9 and the intake 2i! thereof is Conmay vbe manually controlled to stop the movenected to the pipes le and l'l by flexible tubes 2i. ment or a window 1netween either' a fully open or The outlet 22 of the pump s Connected to the closed position pipe il loy a rlexible tube 23. The flexible tubes l5 With these and other objects in view, this in- Connecting the pipes it, il and it to the pump i@ in vention consists in certain novel features oi conpermits the dOOI t0 Swing Open and Closed AISO struction, combination and arrangement of parts Connected t0 the inlet 2@ 0f the Dump S d reSeI- to te hereinafter more fully described and voir 263 for 'the purpose of supplying the pump claimed. and pipes as well as the cylinder with fluid. A 2o For a complete understanding of my invention, piston it operates in the reservoir whereby the 2o reference is to be had to the following description @uid may be forced into the Pipes, Pump und and accompanying drawingsz in which Cylinder l. n

Figure l is a iront elevation partiy in section The handle iii of the valve when moved in one illustrating a window lift adapted to a window direction will brine the passage iii to connect a5 and constructed in accordance with my invenpipes il and e and when moved in another direc- 25 tion. tion will connect the pipes il and d. Thus it will Figure 2 is a diagrammatical view showing be seen that the fluid can be directed from the wiring diagram of the invention. the pump to either end of the cylinder for the Figure 3 is a pian view illustrating a combined purpose of either raising or lowering the winao control valve and switch. i dow 2. The pump is operated by an electric so Figure 4 is o, sectional View illustrating the motor 2l connected in an electric circuit 28 valve construction, which includes a battery or other electrical Figure 5 is a sectional View taken. on the iin@ y source 29. When the valve is operated to cont-J of Figure 1, neet the pipes il and Q, the recess le connects 35 Figure 6 is a detail sectional view illustrating the pipes 8 aud it so that the uid in the lower 35 a fluid Supply means, end of the cylinder l may return to the pump Figure '7 is a detail sectional viewtaken on the While the Pump is forcing fluid H1150 the Upper line l--l of Figure l. end of the cylinder to lower the piston. When the This invention is especially adapted for the valve is operated to connectthe pipe il with 4o operation of windows of motor vehic1es, however, the pipe d, the recess it' Connects the pipes it ao through minor alterations the device', may be and 9 so that the fluid in the upper portion of the adapted for the operation of windows of buildcylinder 'E may return t0 the pump While the ings, dwellings and the like, pump is forcing :duid into the lower end of the Referring in detail to the drawings, the nu- Cylinder to raise the piston. The valve may be 45 meral i indicates a motor vehicle door, 2 the Operated to assume a natural position wherein 45 slidable window of said door and t the floor-of the passage i3 is out 0f Communication With the the motor vehicle. A plate d is secured to the Pipes, 'then the ilid nheeylnder will be lower edge of the slidable window or panel tand! trapped inthe cylinder maintaiilng She WndOW has connected thereto a stern E of a piston (t. in its position.

invention being the provision of a device of this in opposite directions. The valve element is also 5 5o The piston slides in a` cylinder 'l mounted in the The valve includes a switch c'ioizistruct'ion` con 50M door. Connected to the cylinder on opposite sisting of a contact arm 30 fastened onto 'ther sides of the piston li are pipes and 9 and they valve element and mounted on and insulated are in turn connected to a control valve ld. The fromv the valve housing are contacts 3l, 32, dit

control valve is suitably mounted on the door and ed connected in the electric circuit. When op and includes a housing il in which is rotatably the contact arm is disengagedl'rom saidl con- 55 tacts the circuit is broken to the electric motor. The contact arm assumes the circuit breaking position when the-valve is in neutral position.

Carried by the door are switches 35 and 36 each of the snap type, that is, they will remain against accidental movement either in an oi or on position. The switches 35 and 36 are connected in the electric circuit. The'switch 35 is connected in series with the contact 34 of the switch forming part of the control valve while the switch 36 is connected in series with the contact 33 of said switch which forms a part of the control valve. A switch operating rod 31 -is carried by the plate 4 for moving the switch 35 into circuit breaking position when the Window reaches its uppermost position. A switch operating rod 38 is carried by the plate 4 for moving the switch 36 into circuit closing position when the window reaches its uppermost position. A pivotally mounted spring pressed trip 39 is carried by the switch operating rod 31 for the purpose of closing the switch 35 after the window has traveled a short distance in a downward direction.- A similar trip 40 is carried by the plate for opening the switch 36 when the window reaches the limit of its movement in a downward direction.

In operation, when the window is in a closed or uppermost position, the switch 36 is closed so that when the lever I4 'of the valve is moved to connect the pipes 9 and I1 the switch arm 30 bridges the contacts 3| and 33, completing the electric circuit to the electric motor through the switch 36. Fluid entering the upper end of the cylinder 'I from the pump shoves the piston downwardly lowering the window and the uid in the lower part of the cylinder is displaced by the piston and returns to the pump by way of the pipes 8 and I8. As the window reaches its lowermost position, the trip 40 operates the switch 36 and breaks the circuit stopping the electric motor. As the WindowY Vstarts on its downward movement the trip 39 closes the switch 35 so that when the operator actuates the valve to raise the window by connecting the pipe I'I with the pipe 8 the circuit will be closed by the contact arm bridging the contacts 32 and 34, the switch 35 which is in series therewith having already been closed will set the pump in operation so that the fluid entering the lower end of the cylinder will force the window upwardly to a closed position and as it reaches the closed position the trip 39 opens the switch 35 and the switch aim 38 closes the switch 36. Thus it will be seen that it is only necessary for the operator to move the lever I4 into either of its Valve closing positions to start the device nto open or close the window and that the device will automatically be stopped when the window reaches either an open or closed position due to the arrangement of the switches 35 and 36 and the operating means therefor. However, the operator may stop a, window at any desired time from its movement towards either open or closed po.

battery and to one side of the switches 35 and 36. A conductor 44 is connected to the other side of the switch 36 from the conductor 43 and a conductor 45 is connected to the other side of the switch 35 from the conductor 43. The conductor 44 is connected to the contact 33 and the conductor 45 is connected to the contact 34.

The electric motor and pump as well as the supply reservoir 24 are mounted at any suitable place upon the motor vehicle.

What is claimed is:

In combination with a window construction including a frame opened and closed by a slidable panel, a cylinder carried by said frame.v a plate fixed to said panel, a piston operating in said cylinder and connected to said plate, a uid system including a pump connected to opposite ends of the cylinder and a control valve for directing :duid from the pump toeither end of the cylinder and permitting uid to return to said pump from the cylinder, an electric motor for driving said pump, an electric circuit including a source of electrical energy connected to said motor, a double pole switch for said circuit and operated by the movements of said valve, a pair of switches connected in said circuit and one switch of said pair of switches connected in series with one pole of the double pole switch and the other switch of the pairA of switches connected in series with the other pole of the double pole switch, a pair of spaced switch actuating arms carried by said plate for actuating said pair of switches in a manner to alternately closeA and break the respective circuits therethrough, and a pair of trips, one carried by said plate and the other mounted on one of said switch arms, said trips arranged to actuate said pair of switches in a manner to alternately break and close the circuits thereof vafter actuation of said pair of switches by said arms whereby the motor will be automatically stopped on the panel reaching frame closing position and frame opening position and automatically setting said circuit to be closed by said first mentioned switch on the next actuation of the control valve.

LEUTE SOLDATTI. 

